CA2652123A1 - System and method for dynamically allocating stream identifiers in a multi-encryption transport system - Google Patents
System and method for dynamically allocating stream identifiers in a multi-encryption transport system Download PDFInfo
- Publication number
- CA2652123A1 CA2652123A1 CA002652123A CA2652123A CA2652123A1 CA 2652123 A1 CA2652123 A1 CA 2652123A1 CA 002652123 A CA002652123 A CA 002652123A CA 2652123 A CA2652123 A CA 2652123A CA 2652123 A1 CA2652123 A1 CA 2652123A1
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- CA
- Canada
- Prior art keywords
- stream
- encrypted
- primary
- packet
- identifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
- H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23608—Remultiplexing multiplex streams, e.g. involving modifying time stamps or remapping the packet identifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
- H04N21/23895—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption
- H04N21/23897—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption by partially encrypting, e.g. encrypting only the ending portion of a movie
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/43607—Interfacing a plurality of external cards, e.g. through a DVB Common Interface [DVB-CI]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/23406—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving management of server-side video buffer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/2362—Generation or processing of Service Information [SI]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
Abstract
The present invention is suitable for use in a multi-encrypted system that dynamically allocates stream identifiers in a secondary overlay stream depending upon the identifiers in a primary encrypted stream. The primary encrypted input stream is monitored to determine the presence of all identifier values. Once the identifier values are determined, the values are stored in an allocation table and marked as 'in-use' to ensure that these identifier values are not allocated to any of the secondary overlay streams. The primary encrypted stream is monitored and the allocation table is updated continuously to detect any changes or conflicts to the identifier values, and the secondary overlay streams are dynamically updated accordingly.
Claims (20)
1. A method for dynamically allocating identifier values to a secondary stream depending upon a primary stream in a multi-encrypted transport stream, wherein the identifier values fall within a range of values, the method comprising the steps of:
receiving a primary encrypted stream at a processor, wherein the primary encrypted stream comprises primary encrypted packets;
discovering an identifier value for each primary encrypted packet;
storing a bit value corresponding to each discovered identifier value in an allocated table;
based on each discovered identifier value in the allocated table, assigning an available identifier value to each secondary encrypted packet comprised in a secondary encrypted stream, wherein the available identifier value is chosen from an available table.
receiving a primary encrypted stream at a processor, wherein the primary encrypted stream comprises primary encrypted packets;
discovering an identifier value for each primary encrypted packet;
storing a bit value corresponding to each discovered identifier value in an allocated table;
based on each discovered identifier value in the allocated table, assigning an available identifier value to each secondary encrypted packet comprised in a secondary encrypted stream, wherein the available identifier value is chosen from an available table.
2. The method of claim 1, further comprising the step of resetting the bit value in the allocated table accordingly when an identifier value is changed or added in the primary encrypted stream.
3. The method of claim 1, further comprising the step of mapping the assigned identifier value in accordance with the bit value to one of a program association table (PAT) and a program map table (PMT), wherein the PAT and PMT are transmitted along with the multi-encrypted transport stream.
4. The method of claim 3, further comprising the steps of:
continuously monitoring the identifier values of the primary encrypted stream;
resetting the bit value in the allocated table when a monitored identifier value is changed in an updated primary encrypted stream;
determining a reset bit value conflicts with an assigned identifier of the secondary encrypted stream; and changing the assigned identifier of the secondary stream to an updated assigned identifier value taken from the available table to provide an updated secondary encrypted stream.
continuously monitoring the identifier values of the primary encrypted stream;
resetting the bit value in the allocated table when a monitored identifier value is changed in an updated primary encrypted stream;
determining a reset bit value conflicts with an assigned identifier of the secondary encrypted stream; and changing the assigned identifier of the secondary stream to an updated assigned identifier value taken from the available table to provide an updated secondary encrypted stream.
5. The method of claim 4, further comprising the steps of:
remapping the updated assigned identifier of the secondary stream in one of the PAT and the PMT; and transmitting one of the PAT and the PMT comprising the remapped updated assigned identifier.
remapping the updated assigned identifier of the secondary stream in one of the PAT and the PMT; and transmitting one of the PAT and the PMT comprising the remapped updated assigned identifier.
6. The method of claim 4, further comprising the step of:
blocking transmission of the updated primary encrypted stream while the secondary encrypted stream is updated with route changes and one of the PAT and PMT
comprising the updated assigned identifier are transmitted to a plurality of receiving devices.
blocking transmission of the updated primary encrypted stream while the secondary encrypted stream is updated with route changes and one of the PAT and PMT
comprising the updated assigned identifier are transmitted to a plurality of receiving devices.
7. The method of claim 1, the steps further comprising:
receiving the multi-encrypted transport stream at a plurality of receiving devices, wherein the plurality of receiving devices decrypt one of the primary encrypted stream and the secondary encrypted stream;
at each of the plurality of receiving devices, determining a desired program in its associated encrypted stream by a program number in the PAT; and decrypting the desired program by a video, audio, and encryption identifier in the PMT.
receiving the multi-encrypted transport stream at a plurality of receiving devices, wherein the plurality of receiving devices decrypt one of the primary encrypted stream and the secondary encrypted stream;
at each of the plurality of receiving devices, determining a desired program in its associated encrypted stream by a program number in the PAT; and decrypting the desired program by a video, audio, and encryption identifier in the PMT.
8. The method of claim 1, further comprising the steps of:
receiving the primary encrypted stream from the processor and a clear stream at a packet selector;
determining a critical packet of the clear stream and its associated primary encrypted packet;
encrypting the determined critical packet of the clear stream with a secondary encryption scheme to provide the secondary encrypted packet; and ensuring the secondary encrypted packet has the assigned identifier value that does not conflict with the discovered identifier value of the primary encrypted stream by comparing the identifier value of the primary encrypted packet to each bit value in the allocated table.
receiving the primary encrypted stream from the processor and a clear stream at a packet selector;
determining a critical packet of the clear stream and its associated primary encrypted packet;
encrypting the determined critical packet of the clear stream with a secondary encryption scheme to provide the secondary encrypted packet; and ensuring the secondary encrypted packet has the assigned identifier value that does not conflict with the discovered identifier value of the primary encrypted stream by comparing the identifier value of the primary encrypted packet to each bit value in the allocated table.
9. A method for dynamically allocating identifier values to a secondary encrypted stream depending upon a primary encrypted stream, the method comprising the steps of:
receiving a primary encrypted stream at a processor, wherein the primary encrypted stream comprises primary encrypted packets;
determining an identifier value for each primary encrypted packet;
storing the determined identifier value in an allocated table;
receiving the primary encrypted stream and a matching clear stream at a packet selector;
determining a critical packet of the clear stream and its associated primary encrypted packet;
encrypting the determined critical packet of the clear stream with a secondary encryption scheme to provide a secondary encrypted packet;
assigning a secondary identifier value to the secondary encrypted packet that is not present in the allocated table; and transmitting a combined overlay stream to a plurality of receiving devices, wherein the combined overlay stream comprises the critical packets of the primary encrypted stream, secondary encrypted packets of a secondary encrypted stream, and a remaining portion of the clear stream.
receiving a primary encrypted stream at a processor, wherein the primary encrypted stream comprises primary encrypted packets;
determining an identifier value for each primary encrypted packet;
storing the determined identifier value in an allocated table;
receiving the primary encrypted stream and a matching clear stream at a packet selector;
determining a critical packet of the clear stream and its associated primary encrypted packet;
encrypting the determined critical packet of the clear stream with a secondary encryption scheme to provide a secondary encrypted packet;
assigning a secondary identifier value to the secondary encrypted packet that is not present in the allocated table; and transmitting a combined overlay stream to a plurality of receiving devices, wherein the combined overlay stream comprises the critical packets of the primary encrypted stream, secondary encrypted packets of a secondary encrypted stream, and a remaining portion of the clear stream.
10. The method of claim 9, further comprising the step of resetting the identifier value in the allocated table when the determined identifier value for a primary encrypted packet is at least one of changed in, added to, or removed from the primary encrypted stream.
11. The method of claim 9, further comprising the steps of:
continuously monitoring and discovering the identifier values of the primary encrypted stream;
resetting the identifier value in the allocated table when the discovered identifier value for a primary encrypted packet is at least one of changed in, added to, or removed from the primary encrypted stream;
identifying the discovered identifier value conflicts with an secondary assigned identifier value in a secondary packet; and changing the assigned secondary identifier value to an updated assigned identifier value not present in the allocated table.
continuously monitoring and discovering the identifier values of the primary encrypted stream;
resetting the identifier value in the allocated table when the discovered identifier value for a primary encrypted packet is at least one of changed in, added to, or removed from the primary encrypted stream;
identifying the discovered identifier value conflicts with an secondary assigned identifier value in a secondary packet; and changing the assigned secondary identifier value to an updated assigned identifier value not present in the allocated table.
12. The method of claim 9, further comprising the step of mapping the assigned secondary identifier value to one of a PAT and a PMT, wherein the PAT and the PMT are transmitted along with the combined overlay stream.
13. The method of claim 12, further comprising the steps of:
continuously monitoring the primary encrypted stream for changed identifier values in an updated primary encrypted stream;
detecting a change in an identifier value of the updated primary encrypted stream;
determining the changed identifier value conflicts with an equal identifier value of the secondary encrypted stream;
remapping the changed identifier of the secondary encrypted stream in one of the PAT
and the PMT; and changing the conflicting identifier value of the secondary encrypted packet to an available unused identifier value not found in one of the updated primary and secondary encrypted stream.
continuously monitoring the primary encrypted stream for changed identifier values in an updated primary encrypted stream;
detecting a change in an identifier value of the updated primary encrypted stream;
determining the changed identifier value conflicts with an equal identifier value of the secondary encrypted stream;
remapping the changed identifier of the secondary encrypted stream in one of the PAT
and the PMT; and changing the conflicting identifier value of the secondary encrypted packet to an available unused identifier value not found in one of the updated primary and secondary encrypted stream.
14. The method of claim 13, further comprising the steps of:
blocking the transmission of the updated primary and secondary encrypted streams; and transmitting the remapped PAT and the PMT.
blocking the transmission of the updated primary and secondary encrypted streams; and transmitting the remapped PAT and the PMT.
15. A communications system for transmitting a multi-encrypted transport stream, the multi-encrypted transport stream including a primary stream, a secondary stream and a clear stream, each of the streams including a plurality of programs each having a program number and a plurality of packets each having a packet identifier, the communications system comprising:
a device for dynamically allocating program numbers and packet identifiers to secondary packets comprised in the secondary stream depending upon program numbers and packets identifiers present in the primary stream, the device comprising:
monitoring means for monitoring and detecting the program numbers and packet identifiers present in the primary stream; and processing means for assigning available program numbers and available packet identifiers to the secondary packets, wherein the monitoring means continuously monitors the primary stream for any changes in program number and packet identifiers, and when changes occur, the processing means checks for conflicts and subsequently assigns the packet having a conflicting program number or a conflicting packet identifier to one of an available program number and packet identifier.
a device for dynamically allocating program numbers and packet identifiers to secondary packets comprised in the secondary stream depending upon program numbers and packets identifiers present in the primary stream, the device comprising:
monitoring means for monitoring and detecting the program numbers and packet identifiers present in the primary stream; and processing means for assigning available program numbers and available packet identifiers to the secondary packets, wherein the monitoring means continuously monitors the primary stream for any changes in program number and packet identifiers, and when changes occur, the processing means checks for conflicts and subsequently assigns the packet having a conflicting program number or a conflicting packet identifier to one of an available program number and packet identifier.
16. The communications system of claim 15, wherein the device transmits an initial PAT and PMTs including the program numbers and packet identifiers, respectively, that allow a plurality of secondary receiving devices to correctly accept the secondary stream, and wherein in the event of a dynamic primary stream reassignment, the device transmits at least one of a revised PAT and PMTs depending upon the detected conflict.
17. The communications system of claim 16, wherein in the event of a conflict, the device blocks transmission of the primary stream and the secondary stream until the conflicting secondary stream reassignment is complete and the revised PAT and the PMTs reflecting the reassignment are transmitted to the primary and secondary receiving devices.
18. The communications system of claim 15, wherein the monitoring means comprises a processor for assigning a bit value to an unavailable table corresponding to a program number value and a packet identifier value when present in the primary stream.
19. The communications system of claim 18, wherein the processing means subsequently assigns an available one of a program number and a packet identifier in the secondary stream.
20. The communications system of claim 19, wherein the processing means detects a released packet identifier value that was previously in use by the primary stream and stores the released packet identifier value in a buffer to delay its availability.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/383,375 | 2006-05-15 | ||
US11/383,375 US7983417B2 (en) | 2006-05-15 | 2006-05-15 | System and method for dynamically allocating stream identifiers in a multi-encryption transport system |
PCT/US2007/068532 WO2007134089A2 (en) | 2006-05-15 | 2007-05-09 | System and method for dynamically allocating stream identifiers in a multi-encryption transport system |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2652123A1 true CA2652123A1 (en) | 2007-11-22 |
CA2652123C CA2652123C (en) | 2012-05-01 |
Family
ID=38596034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2652123A Expired - Fee Related CA2652123C (en) | 2006-05-15 | 2007-05-09 | System and method for dynamically allocating stream identifiers in a multi-encryption transport system |
Country Status (6)
Country | Link |
---|---|
US (1) | US7983417B2 (en) |
EP (1) | EP2077036B1 (en) |
JP (1) | JP5107346B2 (en) |
BR (1) | BRPI0711827B1 (en) |
CA (1) | CA2652123C (en) |
WO (1) | WO2007134089A2 (en) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
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US8275132B2 (en) * | 2006-05-15 | 2012-09-25 | Buchen Neil B | System and method for dynamically allocating stream identifiers in a multi-encryption transport system |
JP5230112B2 (en) * | 2007-03-01 | 2013-07-10 | キヤノン株式会社 | Information distribution apparatus, information distribution method, and information distribution program |
US8595493B2 (en) * | 2010-04-13 | 2013-11-26 | Microsoft Corporation | Multi-phase storage volume transformation |
US9008308B2 (en) * | 2012-02-08 | 2015-04-14 | Vixs Systems, Inc | Container agnostic decryption device and methods for use therewith |
EP2680595A1 (en) * | 2012-06-25 | 2014-01-01 | ITE Tech. Inc | Apparatus and method thereof for multiplexing transport streams to a transport stream |
EP2899941B1 (en) * | 2014-01-23 | 2020-06-03 | ABB Schweiz AG | Method for processing data streams with multiple tenants |
US10228751B2 (en) | 2014-08-06 | 2019-03-12 | Apple Inc. | Low power mode |
US9647489B2 (en) | 2014-08-26 | 2017-05-09 | Apple Inc. | Brownout avoidance |
US10708391B1 (en) | 2014-09-30 | 2020-07-07 | Apple Inc. | Delivery of apps in a media stream |
US10231033B1 (en) | 2014-09-30 | 2019-03-12 | Apple Inc. | Synchronizing out-of-band content with a media stream |
US11363133B1 (en) | 2017-12-20 | 2022-06-14 | Apple Inc. | Battery health-based power management |
US10817307B1 (en) | 2017-12-20 | 2020-10-27 | Apple Inc. | API behavior modification based on power source health |
KR102188270B1 (en) * | 2018-07-06 | 2020-12-09 | 엘지전자 주식회사 | Method for processing 360-degree video data based on sub-picture and apparatus for the same |
US10743041B1 (en) | 2019-01-31 | 2020-08-11 | DISH Technologies L.L.C. | Systems and methods for facilitating adaptive content splicing |
US11638049B2 (en) | 2019-10-16 | 2023-04-25 | Dish Network L.L.C. | Systems and methods for content item recognition and adaptive packet transmission |
US11303943B2 (en) * | 2019-10-16 | 2022-04-12 | Dish Network L.L.C. | Systems and methods for facilitating adaptive content items for delivery in a packet stream |
US10880351B1 (en) | 2019-10-16 | 2020-12-29 | Dish Network L.L.C. | Systems and methods for adapting content items to endpoint media devices |
US11218525B2 (en) | 2020-01-21 | 2022-01-04 | Dish Network L.L.C. | Systems and methods for adapting content delivery based on endpoint communications |
US11245946B2 (en) | 2020-01-21 | 2022-02-08 | Dish Network L.L.C. | Systems and methods for adapting content items to secured endpoint media device data |
US11012737B1 (en) | 2020-04-27 | 2021-05-18 | Dish Network L.L.C. | Systems and methods for audio adaptation of content items to endpoint media devices |
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US5864358A (en) * | 1995-06-26 | 1999-01-26 | Matsushita Electric Industrial Co., Ltd. | Method for switching programs in digital broadcasting and digital broadcast receiving apparatus |
US7113523B1 (en) * | 1997-06-11 | 2006-09-26 | Sony Corporation | Data multiplexing device, program distribution system, program transmission system, pay broadcast system, program transmission method, conditional access system, and data reception device |
DE60019174T2 (en) * | 1999-08-06 | 2005-08-11 | Matsushita Electric Industrial Co., Ltd., Kadoma | Data transmission method, apparatus and data receiving apparatus |
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KR100952800B1 (en) | 2002-01-02 | 2010-04-14 | 소니 일렉트로닉스 인코포레이티드 | Partial encryption and pid mapping |
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-
2006
- 2006-05-15 US US11/383,375 patent/US7983417B2/en active Active
-
2007
- 2007-05-09 JP JP2009511161A patent/JP5107346B2/en not_active Expired - Fee Related
- 2007-05-09 BR BRPI0711827-9A patent/BRPI0711827B1/en not_active IP Right Cessation
- 2007-05-09 EP EP07783490.1A patent/EP2077036B1/en active Active
- 2007-05-09 WO PCT/US2007/068532 patent/WO2007134089A2/en active Application Filing
- 2007-05-09 CA CA2652123A patent/CA2652123C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP2077036A2 (en) | 2009-07-08 |
CA2652123C (en) | 2012-05-01 |
WO2007134089A3 (en) | 2008-01-10 |
US7983417B2 (en) | 2011-07-19 |
JP2009538052A (en) | 2009-10-29 |
WO2007134089A2 (en) | 2007-11-22 |
EP2077036B1 (en) | 2016-08-24 |
US20070263860A1 (en) | 2007-11-15 |
BRPI0711827B1 (en) | 2020-03-24 |
BRPI0711827A2 (en) | 2012-01-17 |
JP5107346B2 (en) | 2012-12-26 |
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EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20180509 |